2566566006 has 16 divisors (see below), whose sum is σ = 5194977984. Its totient is φ = 845214344.

The previous prime is 2566566001. The next prime is 2566566019. The reversal of 2566566006 is 6006656652.

It is a super-2 number, since 2×2566566006² = 13174522126309584072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566566001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576376 + ... + 2577371.

It is an arithmetic number, because the mean of its divisors is an integer number (324686124).

Almost surely, 2^2566566006 is an apocalyptic number.

2566566006 is an abundant number, since it is smaller than the sum of its proper divisors (2628411978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566566006 is a wasteful number, since it uses less digits than its factorization.

2566566006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153835.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 2566566006 is about 50661.2870543179. The cubic root of 2566566006 is about 1369.1493122228.

The spelling of 2566566006 in words is "two billion, five hundred sixty-six million, five hundred sixty-six thousand, six".